SUSE-SU-2026:21425-1: important: Security update for python-jwcrypto

[SLE-UPDATES]

# Security update for python-jwcrypto

Announcement ID: SUSE-SU-2026:21425-1  
Release Date: 2026-04-29T08:15:26Z  
Rating: important  
References:

  * bsc#1261802

  
Cross-References:

  * CVE-2026-39373

  
CVSS scores:

  * CVE-2026-39373 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-39373 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39373 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for python-jwcrypto fixes the following issues:

  * CVE-2026-39373: weak mitigation for JWT bomb attack in the `deserialize`
    function can lead to memory exhaustion via crafted compressed JWE tokens
    (bsc#1261802).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-652=1

  * SUSE Linux Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-652=1

## Package List:

  * SUSE Linux Enterprise Server for SAP applications 16.0 (noarch)
    * python313-jwcrypto-1.5.6-160000.3.1
  * SUSE Linux Enterprise Server 16.0 (noarch)
    * python313-jwcrypto-1.5.6-160000.3.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-39373.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1261802

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